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Add support for multiline searches (#12868)
Signed-off-by: Christian Radke <[email protected]>
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packages/search-in-workspace/src/browser/components/search-in-workspace-textarea.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| // ***************************************************************************** | ||
| // Copyright (C) 2021 Ericsson and others. | ||
| // | ||
| // This program and the accompanying materials are made available under the | ||
| // terms of the Eclipse Public License v. 2.0 which is available at | ||
| // http://www.eclipse.org/legal/epl-2.0. | ||
| // | ||
| // This Source Code may also be made available under the following Secondary | ||
| // Licenses when the conditions for such availability set forth in the Eclipse | ||
| // Public License v. 2.0 are satisfied: GNU General Public License, version 2 | ||
| // with the GNU Classpath Exception which is available at | ||
| // https://www.gnu.org/software/classpath/license.html. | ||
| // | ||
| // SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 | ||
| // ***************************************************************************** | ||
|
|
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| import { Key, KeyCode } from '@theia/core/lib/browser'; | ||
| import * as React from '@theia/core/shared/react'; | ||
| import TextareaAutosize from 'react-autosize-textarea'; | ||
| import debounce = require('@theia/core/shared/lodash.debounce'); | ||
|
|
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| interface HistoryState { | ||
| history: string[]; | ||
| index: number; | ||
| }; | ||
| type TextareaAttributes = React.TextareaHTMLAttributes<HTMLTextAreaElement>; | ||
|
|
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| export class SearchInWorkspaceTextArea extends React.Component<TextareaAttributes, HistoryState> { | ||
| static LIMIT = 100; | ||
|
|
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| private textarea = React.createRef<HTMLTextAreaElement>(); | ||
|
|
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| constructor(props: TextareaAttributes) { | ||
| super(props); | ||
| this.state = { | ||
| history: [], | ||
| index: 0, | ||
| }; | ||
| } | ||
|
|
||
| updateState(index: number, history?: string[]): void { | ||
| this.value = history ? history[index] : this.state.history[index]; | ||
| this.setState(prevState => { | ||
| const newState = { | ||
| ...prevState, | ||
| index, | ||
| }; | ||
| if (history) { | ||
| newState.history = history; | ||
| } | ||
| return newState; | ||
| }); | ||
| } | ||
|
|
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| get value(): string { | ||
| return this.textarea.current?.value ?? ''; | ||
| } | ||
|
|
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| set value(value: string) { | ||
| if (this.textarea.current) { | ||
| this.textarea.current.value = value; | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * Handle history navigation without overriding the parent's onKeyDown handler, if any. | ||
| */ | ||
| protected readonly onKeyDown = (e: React.KeyboardEvent<HTMLTextAreaElement>): void => { | ||
| // Navigate history only when cursor is at first or last position of the textarea | ||
| if (Key.ARROW_UP.keyCode === KeyCode.createKeyCode(e.nativeEvent).key?.keyCode && e.currentTarget.selectionStart === 0) { | ||
| e.preventDefault(); | ||
| this.previousValue(); | ||
| } else if (Key.ARROW_DOWN.keyCode === KeyCode.createKeyCode(e.nativeEvent).key?.keyCode && e.currentTarget.selectionEnd === e.currentTarget.value.length) { | ||
| e.preventDefault(); | ||
| this.nextValue(); | ||
| } | ||
|
|
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| // Prevent newline on enter | ||
| if (Key.ENTER.keyCode === KeyCode.createKeyCode(e.nativeEvent).key?.keyCode && !e.nativeEvent.shiftKey) { | ||
| e.preventDefault(); | ||
| } | ||
|
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| this.props.onKeyDown?.(e); | ||
| }; | ||
|
|
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| /** | ||
| * Switch the textarea's text to the previous value, if any. | ||
| */ | ||
| previousValue(): void { | ||
| const { history, index } = this.state; | ||
| if (!this.value) { | ||
| this.value = history[index]; | ||
| } else if (index > 0 && index < history.length) { | ||
| this.updateState(index - 1); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Switch the textarea's text to the next value, if any. | ||
| */ | ||
| nextValue(): void { | ||
| const { history, index } = this.state; | ||
| if (index === history.length - 1) { | ||
| this.value = ''; | ||
| } else if (!this.value) { | ||
| this.value = history[index]; | ||
| } else if (index >= 0 && index < history.length - 1) { | ||
| this.updateState(index + 1); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Handle history collection and textarea resizing without overriding the parent's onChange handler, if any. | ||
| */ | ||
| protected readonly onChange = (e: React.ChangeEvent<HTMLTextAreaElement>): void => { | ||
| this.addToHistory(); | ||
| this.props.onChange?.(e); | ||
| }; | ||
|
|
||
| /** | ||
| * Add a nonempty current value to the history, if not already present. (Debounced, 1 second delay.) | ||
| */ | ||
| readonly addToHistory = debounce(this.doAddToHistory, 1000); | ||
|
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| private doAddToHistory(): void { | ||
| if (!this.value) { | ||
| return; | ||
| } | ||
| const history = this.state.history | ||
| .filter(term => term !== this.value) | ||
| .concat(this.value) | ||
| .slice(-SearchInWorkspaceTextArea.LIMIT); | ||
| this.updateState(history.length - 1, history); | ||
| } | ||
|
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| override render(): React.ReactNode { | ||
| const { onResize, ...filteredProps } = this.props; | ||
| return ( | ||
| <TextareaAutosize | ||
| {...filteredProps} | ||
| autoCapitalize="off" | ||
| autoCorrect="off" | ||
| maxRows={7} /* from VS Code */ | ||
| onChange={this.onChange} | ||
| onKeyDown={this.onKeyDown} | ||
| ref={this.textarea} | ||
| rows={1} | ||
| spellCheck={false} | ||
| > | ||
| </TextareaAutosize> | ||
| ); | ||
| } | ||
| } |
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